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RMC HT575 Pressure & Temp Relief Valve 20mm 700kpa HT703
RMC’s Pressure and Temperature Relief (P & T Relief) Valves are safety controls which ensure that the temperature of the water in a pressurised unvented water heater cannot exceed 99° C in the event that the normal thermostatic controls fail. These valves may be used to guard against overtemperature and over-pressure hazards wherever water is stored in unvented containers. This is a requirement of Australian Standard AS 3500-4. RMC P & T Relief Valves are available in 15 mm and 20 mm configurations.